Ballais, Jean-Louis (2000) „Chapter 7: Conquests and land degradation in the eastern Maghreb“ p. 133In Barker, Graeme and Gilbertson, David (2000) The Archaeology of Drylands: Living at the Margin Routledge, London, Volume 1, Part III – Sahara and Sahel, pp. 125–136, ISBN 978-0-415-23001-8
Ballais, Jean-Louis (2000) „Chapter 7: Conquests and land degradation in the eastern Maghreb“ p. 134In Barker, Graeme and Gilbertson, David (2000) The Archaeology of Drylands: Living at the Margin Routledge, London, Volume 1, Part III – Sahara and Sahel, pp. 125–136, ISBN 978-0-415-23001-8
